Refrigerating device



oughly :Patent-ea sept. 1,1925.

naman c. smart, or mrnroan, coNNEcTIcUr..

REFRIGRATING DEVICE.

-. Application mening-ust 19,' 1e2a serial 'mr 582,864.

To all whom 'it may concern:-

Be it known that DANIEL (lL-SMITH, a citizen of the United States. and resident of Milford, in the countyof New aven and li-State of Connecticut, has invented certain new and fusefulimprovements in Refrigerating Devices, of which the following is a specificationt This'invention relatesto new and usefullO. improvements in artificial refrlgeratlng 'apparatuses.

The-purpose of the invention is to improve upon apparatuses ofthe above char acter by providing means forna'ore'thorcirculating the liquid usedtherein, and particularly to provide an improved i form of generator and absorber `wherein a more thorough circulation of the liquid is obtainedwhen passing therethrough and further -to simplify and cheapen the Aconstruction of a refrigerating apparatus \of this class whereby not. only improved 'and more economical results are obtained. but' which refregerating apparatus can itself be. g5 -constructed ata relatively small cost making it morer readily available for domestic uses. f t This invention is obviously particularly applicable to a still for distilling-gas, such as ammonia, from a suitableliquor, or to an absorberv for re-absorloing the expanded ,gas, after refrigeration has taken place, back.

into the liquor, and in the 'accompanying` drawings I have shown a form of generator together with a receiver and vrefrigerator n the returning gas.'

A further object of'the invention is to control the flow` of gas from .the receiver to the coolingcoils and absorben-'so that Asaid gas may be fed forward in such proper# 5 various changes in thel form, proportion, size and mmordetails of construction with- 1n the scope of the claim' may be resorted to without departure from the spirit of the in- 'ventiom Similar characters of reference denote like or corresponding parts throughout the accompanying drawings ,-forming a part of this specification, and wherein the generator and other parts are shown operatively connected to form a complete refrigerating apparatus fitted with my-improvements.

Fig. 1 shows a vertical sectional end view of my improved refrigerating apparatus as shown on line'1-1 of Fig. 2;"and l Fig. 2 shows a longitudinal sectional elevation of the complete apparatus, thesection being taken on thei-rregular line 2-2 of Fig. 1.

UNITED' STATES PATENT oFF1c-i .'.A

Referring in detail to the drawings and the 'reference characters marked-thereon, 5 vwill be seen to represent the combined generatorand absorber which is filled with a suitable solution, such as aqua ammonia, to substantially the level shown at a and in this connection I may say that the solution as used in the operation includes approxin mately` 26% of ammonia gas and 74% of water. 6 represents the storage receiver for holding the distilled products fromthe generator 5 and as will be seen is connected therewith by pipe 7 having'y connected therein a condenser v8 of any approved construction. This connecting pipe sfurther' provided with a valve 9 whereby 4the passage of fluid 'from ltaking fromvthe topof the chamber maybe controlled The condenserincludes an inlet pipe 10 and an outlet 11, by means of which the supply of cooling water maybe drawn thefgenerator through the condenser may be l opened 'or closed and the supply of ammonia -oif at any time.- Both of these-pipes 10 and '11 are provided with valves to regulate the passage ofliquid therethrough A gauge 12 A pipe connection "7 `next adjacent to. the top portion ofthe generator.

`is-located inthe forward end `portion of the i The lower portion of the receiver is connected by means -of a'pipe 13 with thecooling coilor heatabstractor 14 for labstracting heat from the atmosphere and positions as the' absorber'is able to receive it.

4'With' these 'and .other objects in view-the invention resides and consists inV the construction andv novel combinationand arrangement of parts hereinafter more fully tioned at any desired .or distant point, the l described, illustrated `in `the accompanying flow offliquid to said coil being controlled xdrawings, and pointed out in the claim Aby means of valves 15 and 15. In practice hereto appended, it being understood that only one of these valves is designed to be lascharge end portion 18 of vthis pipe is ar ranged horizontally within the lower cent1-al portion of the generator, and is provided with a series of small holes 19 whereby the gas from the pipe is permitted to escape into the chamber and mix with the liquid contained therein.

The lower portion of the chamber is provided with a series of longitudinally disposed partitions 20, 21 and 22 which are connected to the end and side walls of the generatorso as to divide said lower portion into compartments 23, 24 and 25, each of smaller dimensions than that of the remaining upper portion 26 of the generator. :Eachl of these three partitions is provided with a series of holes 27 along one of its edge portions, said holes being alternately 'arranged first in one edgeportion of the lower partition, then in the oppositely positioned edge' portion of the next'partition, and again in the return edge portion of the third partition. rlhe holes in the second partition are thus positioned distant from the holes of the irstpartition, andthe holes of the third positioned on thev opposite side of the genl tion of the liquor takes erator from that of the second and substanpartition, thus charged through the holes 19 of the portion 18 of the return pipe absorbed therein. to be circulated horizontally.. first through the lower compartment .23, see arrows Fig. 1, through the hole 27 and then across through the compartment 24 to the holesl 27 in the opposite edge portion of the middle partition, and then back again through the compartment 21. to the holes in the top partition where it enters the larger chamber 26. The absorption takes place when the liquor in the tank 5 is cooled, the same being allowed to stand in a cool place for a suliicient length of time after heating.l lf desired, a cooling water jacket could be employed for this purpose, as is well lrnown. The circulaplace more particularly during the reheating of the liquor in the generator and absorber and whereby the gas is again discharged from the liquor and'- erator is accomplished by the useof a longii,es1,91a p' tion-0f fuel and .whereby the lighted flames thereofare applied directl to the underside of'the generator 'to' therein;v The large horizontal area .of the superimposed ichambers of relatively small depth allows of very eliicient -and rapid.

is open, the flow of gas being Aof ,course'regulated said valve, which is open whenthe hat is on and closed when the heat is turned o en all the ammonia beendiseat the liquorl charged from the generator andthe heat and the water turnedoil", the generator'is allowed to cool down and is then ready to begin the re-absorption of the gas from the refrigerator.

The water `remaining in the generator .after distillation will permit the re-absorp.- tion of every ounce of ammonia gas that it originally contained and will then be ready for' discharging. This distilled product is capable of absorbing the usual amount of heat from the atmosphere' which in -turn lowers thetemperature of the surrounding atmosphere, but when one pound of this distilled product has absorbed its given heat quantity it can do no more for the present and must be againsubjected to the action of heat in the generator and` condensation in the condenser, when it will again possess power of absorbing the heat from the surrounding atmosphere. This cycle may be repeated indefinitely without loss in effect providing the apparatus is properly sealed from the air. Y

The operation of the apparatus would first of course include the filling of the generator with a solution of ammonial of the character specified after which heat would be applied to the under side of the generator from the gas burner shown, the eifect of 'which is to heat the 'liquid and separate the ammonia gas from the-water.' .From the foregoing it will be seen that ,the gas thus extracted from the generator assumes the level' indicated by and is "then transferred to the receiver for use in' the refrigerator. By opening the valve 15, a sufficient quantity of liquid ammonia denoted- C may be admitted from the receiver to the heat abstracto-r 14, there to absorb heat from' the atmosphere in order that refrigeration may be' produced, as is well known. The resulting ammonia gas is caused "to, return to the generator inthe'manner' already"r described."

- Having thus described my invention what Lts-rela i claim and desire to secure by Letters Patent is:

in a refrigerating apparatus, in combina tion a condenser and receiver adaptedto contain liquid ammonia, a heat abstract ing element connected to the receiverI and adaptedto receive liquid ammonia therefrom, said liquid ammonia becoming gaseous in said ele ment as it absorbs heat from the atmosphere7 an absorber and generator' adapted to contain aqua ammonia and consisting of a relatively long horizontally disposed tank and longitudinally extending vertically spaced' horizontal partitions disposed in the lower port-ion of said tank to form4 longitudinally disposed superimposed chambers, each of said partitions having openings adjacent one edge portion, the openings of each-partition being opposite the openings of the adgacent partitions to insure flow of liquid through the generator passing horizontally thro-ugh the chambers in relatively large area super imposed layers, a pipe connections between said heat abstracting element and saidabsorber and generator7 said pipe connection having a perforated lower end situated in the lowerrnost'of said chambers, a shut-off valve in'said pipe between the perforated end and said element, means for heating said absorber and generatorat its lo-wer portion, whereby a thermo-flow of the liquor is produced upwardly and horizontally through said chambers and ammonia gas is given oii at the top, and a connection between the` upper portion of said absorber and generator and said condenser and recelver.

Signed at Bridgeport, in the county. of'

DANIEL SMITH. 

